Turquoise is also second least valuable Jewel in Castlevania: Lament of Innocence (800 Gold), which is twice as much Zircon, but less than an Opal. Using a Turquoise with the Jewel Crush randomly switches the sub-weapon that you have equipped. You do not have an opportunity to change back to the old sub-weapon. This helps "protect travelers" in that it gives a chance that you may get an item you need when you are far from a place where you could get it.